Flushing-valve.



A. H. JOHNSON.

FLUSHING VALVE.

APPLICATION FILED 1uLY22, 1913.

l 1 82,686 Patented May 9, 1916.

EINTE ns Parana FFWE AROY HARDY JOHNSON, OF COLUMBIA, TENNESSEE,ASSIG-NOR OF ONE-HALF '10 CYRUS C. HOUSTON, OF LEWISBURG, TENNESSEE.

FINISHING-VALVE.

Specification of Letters Patent.

Patented May 9, 1916.

Application filed July 22, 1913. Serial No. 780,519.

To all whom it may concern Be it known that I, ARoY H. JOHNSON, ofColumbia, in the county of Maury and State of Tennessee, have inventedcertain new and useful Improvements in Flushing-Valves; and I herebydeclare that. the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, which formpart of this specification.

This invention relates to flushing valves, and is an improvement uponthe valve shown in Patent #1,055,538 granted to me March 11, 1913.

The object of the present invention is to simplify the construction ofmy said patented valve, improve its operation, increase its efiiciency,and prevent freezing thereof; all of which objects are realized by thepresent invention which I will describe in detail with reference to theaccompanying drawings, in which- Figure 1 is a vertical sectionalelevation through the complete flushing valve showing the same closed infull lines and partially opened in dotted lines. Fig. 2 is a sectionaldetail view taken on line 22 of Fig. 1.

The casing may be composed of two or more parts, having a lower watercontaining chamber A, and an upper water receiving chamber B, whichchambers A and B may be formed in separate castings 1 and 1 united by athread and socket joint as indicated at 1"; the chambers A and B beingseparated by a partition 2, which may be confined between the parts 1,1*, as shown. The part 1 has an inlet 1 communicating with chamber B,and adapted to be connected to a supply pipe; and the part 1 has anoutlet communicating with the upper part of chamber A, and preferably oflarger diameter than the inlet 1, and adapted to be con nected, in theusual way, to an outlet pipe or receptacle, not shown.

The partition 2 has a central opening which is adapted to be closed byan upwardly opening valve 3 attached to a vertical stem 3 that extendsthrough the opening in partition 2 and preferably has its upper endtapered or reduced as shown at 3 and loosely engaged within a socket 4in the inner end of a regulating screw 4 which is tapped through acentral opening in the top of the chamber B and may be locked inadjusted position by a j am-nut 49, said screw 4 limiting the openingmovement of the valve 3 by arresting the vertical movement of the stem3.

On the lower end of the stem 3 in the chamber A and below the outletopening l is a spider 3 to which is attached an annular disk or plate 3which is provided with a large opening adapted to be closed by adownwardly opening valve 5, which has a stem 5 entering a socket or bore3 in the lower end of stem 3, and may be suspended by a contractilespring 5 from the lower end of the stem 3. The construction is such thatvalve 5 is normally held closed by the spring 5 but will be opened bythe rush of water if the stem 3 be raised quickly to open the valve 3but when the stem has been raised the valve 5 will be immediately closedby spring 5 and with the ring 3 forms a plunger in the chamber A thatwill cushion the descent or closing of the valve 3.

Above the spider 3 is a deflecting disk 6, which may be rigidly attachedto the stem 3 in any suitable manner, as by a screw 6. This deflectingdisk will prevent the water entering chamber A, when the valve 3 isopened, striking and unseating the valve 5. The stem 3 may be raisedwhen it is desired to open the valve 3 by means of a link-rod 7pivo-tally connected to the stem 3 at its lower end, as by passing itthrough a hole in the rod, and having its upper end pivotally engagedwith one end of a lever 7 fixed to a shaft 7 b extending across theoutlet opening 1 On the outer end of the shaft 7 is fixed a lever 7which may be connected with a pull-cord or chain 7 When the lever 7 isdrawn downward, as indicated in dotted lines in Fig. 1, the stem 3 willbe raised and the valve 3* opened; it is shown partially raised inFig. 1. The extent of opening movement of the valve 3 may be regulatedby adjusting the screw 4.

The chamber A always remains filled with water up to the lower edge ofthe opening 1, therefore on the initial upward movement of the valvestem 3 the pressure of the water on the valve 5 will unseat the latterand permit the valve 3 to move easily, but when lever 7 is released andthe stem 3 tends to drop, the water in chamber A and the action ofspring 5 closes valve 5 which with the ring 3 then forms a piston inchamber A which retards the descent of the valve stem 3 and the latterdescends slowly, according to the weight of the spider, ring and valveon the stem, and the extent of space left for the passage of wateraround the edges of the partition 3 when the valve 5 is closed.

The time required for closing the valve 3 can thus be regulated, andwhen the stem 3 is raised, water will flow from the inlet 1 throughchamber B into the upper part of chamber A and out at 1, and this flowof water will continue until the valve 3 seats; and the seating of thisvalve is cushioned and delayed by the parts 3 and 5, acting as a plungerin a dash-pot, in the chamber A.

In order to prevent the valve freezing I provide means by which thevalve 3 may be kept partially unseated in cold weather; such meanscomprises a threaded rod 8 tapped through the lower end of chamber A andprovided with an adjusting head 8 and jam-nut 8"; this red 8 can beadjusted inwardly to the position indicated in dotted lines, Fig. 1, inwhich position it would engage valve 5 just before the latter reachesits lowest position, and arrest its descent thereby holding the valve 3slightly raised, and permitting a small amount of water to flow from theinlet to the outlet through the valve chambers.

lVhat I claim is:

1. A flushing valve comprising a casing having an upper and a lowerchamber, an

inlet to the upper chamber, and an outlet from the lower chamber, and anintermediate partition provided with an opening; with a valve stemextending through the partition from the lower chamber into the upperchamber, a downwardly closing valve on said stem within the upperchamber adapted to close the opening in the parti tion, an annular plateattached to the lower end of said stem within the lower chamber andbelow the outlet opening, a downwardly opening valve closing the openingin said plate, a spring for closing the latter valve, means for raisingsaid stem to open the inlet valve thereby momentarily opening the lowervalve; and a deflector mounted on said stem above the downwardly openingvalve to prevent in-rushing water unseating said valve.

2. In a flushing valve the combination of a casing having upper andlower chambers, an inlet to the upper chamber, an outlet from the lowerchamber near the upper end Copies of this patent may be obtained forfive cents each, by addressing the Commissioner of Patents.

thereof, and an intermediate partition provided with an opening; a valvestem .extending through the partition from the lower chamber into theupper chamber, an upwardly opening valve on said stem within the upperchamber adapted to close the opening in the partition, an annular plateattached to the lower end of said stem within the lower chamber andbelow the outlet opening, a downwardly opening Valve closing the openingin said plate, a spring for closing the latter valve, and means forraising said stem to open the inlet valve thereby momentarily openingthe lower valve; a deflecting disk mounted on said .stem above thedownwardly opening valve to prevent in-rus'hing water unseating saidvalve; and a screw in the top of the upper chamber having a socket inits lower end adapted to guide the upper end of the guide rod and limitthe lifting movement of said rod, substantially as described.

3. A flushing valve comprising a casing having an upper and a lowerchamber, an inlet, an outlet, and an intermediate partition providedwith an opening; a valve stem extending through the partition into bothchambers, a downwardly closing valve on said stem within the upperchamber adapted to close the opening in the partition, an annular plateattached to said stem within the lower chamber and having an openingtherein, a downwardly opening valve mounted on said valve stem forclosing the opening in said plate, a' deflecting disk.

rodtapped through the lower end of the casing and adapted to engage thedownwardly opening valve and limit the movement of the downwardlyclosing valve, and a screw in the top of the upper-chamber adj ustablefrom the outside thereof, said screw having a socket in its lower endadapted to engage and guide the upper end of said valve stem and limitthe upward movement 1 thereof, substantially as described. 7

In testimony that I claim the foregoing as my own, I affix my signaturein presence of two witnesses.

AROY HARDY JOHNSON. lVitnesses:

C. L. Mason, H. B. CocHRAN.

Washington, D. C.

